Which of the following is a good source of dietary fiber?

Whole grains are recognized as a good source of dietary fiber because they contain the entire grain kernel, including the bran, germ, and endosperm. This intact structure of whole grains means they are rich in fiber, which aids in digestion, helps regulate blood sugar levels, and contributes to a feeling of fullness, which can be beneficial for weight management. Foods such as oats, brown rice, quinoa, and whole wheat products are excellent examples of whole grains that provide substantial amounts of dietary fiber.

In contrast, white rice and soft drinks do not offer significant fiber content. White rice has been processed to remove the bran and germ, which diminishes its fiber level. Similarly, soft drinks contain sugar and other additives without any fiber. Red meat, while a source of protein and other nutrients, contains no dietary fiber either, as animal products do not provide fiber. This makes whole grains the clear choice for a fiber-rich diet.